I have seen an ob/gyn and a lactation consultant. I've gone through 2 different types of antibiotics (because we thought it might be mastitis) and tried benadryl and cortozone (because we thought I might be alergic to something). I have redness all the way around both breasts, no pain, no lumps, no fever, just redness. My bra is not binding. I've had this for 3 weeks... Does anyone know what this could be? I don't know if it's breast cancer or not... but wouldn't the ob/gyn or LC have caught it if it was? I'm breastfeeding exclusively and my daughter is almost 6 months old.